Rubber.



PATENTED JULY 24, 1906.' L. PERoT-TI.

RUBBER. APPLIGATION FILED MAR. e, 1904.

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'UNITED STATES PATENT OFFICE.

RUBBER.

Specification of Letters Patent.

Patented July 24,1906;

Application led March 8, 1904. Serial No. 197,201.

To all whom t may concern.:

Be it known that I, LOUIS PEROTTI, a subject of the King of Italy, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Im rovements in Rubbers and I do hereby dec are the followin to be a full, clear, and exact description o the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to numerals of reference marked thereon, which form a part of this specification.

The rubbers as at present used have the drawback that they not only do not prevent a person from slipping on slippery ground, but often even cause the slipping, and on this account many people refer to go without rubbers. In order to o away with this drawback and to allow the person to keep on the rubbers when enterin rooms without the risk of damaging the oors, I form the rubbers without bottoms in the heels and use instead of the latter removable plates or caps bearing on their outer surface pins or s ikes, said plates or caps being ada ted to tightly close up the bottom ofthe hee s.

In order to make my invention more clear, the same is illustrated in the accompanying drawings, in which similar numerals denote corresponding parts, and in which- Figure 1 shows the improved rubber, partly in section, the dotted lines showing the antislipping-plate attached vto the heel raised.

. Fig. 2 shows a top plan view of the antislipping-plate, and Figs. 3 and 4 show some details of construction.

In the drawings, 1 indicates a rubber of ordinary form, the heel of said rubber having no bottom. A metal plate 2 is embedded in the sole of the rubber and extends through the front wall of the heel downward. The embedding of this plate 2 in the sole ofthe rubber can be done simultaneously with the casting of the molten mass of the rubber material into the form. The lower part of the. plate 2 is uncovered, and extending outward from within the rubber material it is bent forward and formed into an eye 9, the outer art 3 of the inner wall of the heel being at its bottom end cut away, while the inner part 4 thereof is of the same length as the other walls. A plate 5, having on its three outer sides anupwardly-projectingwall 6 and forming thus a cap is provided with pins or spikes 11 on its bottom surface and is adapted to replace the bottom f the heel and at the same time to serve as a means for preventing the slipping of the wearer on slippery ground.

The plate 5 has at its inner edge eyes 10, corresponding with the eye 9 ofthe plate 2, a pin or bolt being passed throu h the said eyes 9 and 10, forming with the atter a hingejoint.

In order to have the plate 5 tightly close up the bottom of the heel, a groove is arranged in the upwardly-projecting Wall 6 of the plate 5', and a strip 7 of elastic material is fitted in said groove. The bottom edge ot' the heel is somewhat thickened, forming at the outside a shoulder 14, which when the plate 5 is applied engages the elastic strip and secures t e plate 5 in its working position. When the plate 5 is disengaged, it takes up a position underneath the sole of the rubber, in which it is out of the way. For this purpose a spiral spring 12 is suitably arranged between the members 9 and 10 of the hinge-joint, connecting the embedded metal plate 2 and the splike-plate 5 and having the tension to hold t e spike-plate out of working position.

do not,'however, restrict myselr` tothe above-described arrangement, as any alterations could be made without departing from the subject of my invention.

What I claim is- 1. The combination with an ordinary rubber having no bottom at its heel, of a metal plate embedded in the sole of the rubber, a second plate hinged thereto and bearing spikes on its outer surface and means for holding the said spike-bearing late in Working position, substantially an fEr the purpose as speciiied.

2. The combinaton with an ordinary rubber having no bottom at its heel, of a metal late embedded in the sole of the rubber and avin its rear end projecting outward from the so e, a second metal plate hinged to the said end, this plate bearing on its outer surface spikes and having an u wardly-projecting wall on three outer si es thereof, thus forming a cap adapted to fit upon the bottom of the heel and to tightly close up the same,

means for holding the spike-bearmg plate in its working position, substantially and for the purpose as specified.

3. The combination with an ordinary rubber having no bottom at its heel, of a metal plate embedded in the sole ofthe rubber and IOO havin its rear end projecting outward from the so e, a second plate hinged 4to the said end f and having spikes on its outer surface and on the three outer sides an upwardly-proj ecting wall, said wall being adapted to enga e the heel and to form a tlght joint therewit the bottom end of the heel having on the outside a shoulder or a rib and the wall of the plate having a groove on its inner surface and a strip of elastic material iitted in said groove7 the said shoulder being adapted to engage the elastic'strip and to form a ti ht joint around the heel and to securely hol the s ike-plate in its working position, substantia y and for the purpose as speciiied.

4; The combination with an ordinary rubber having no bottom at its heel7 of a metal plate embedded in the sole of the rubber and extending downward through the front wall of theheel, a second plate hinged to the bottom and outwardly-projecting end of the iirst plate and bearing on its outer surface spikes, this plate being adapted to iit upon the bottom of the heel and to tightly close up y the same when in working position and means for holdin this s ikelate out of engagement with t e hee su stantially and or the purpose as specified. 5. The combination with an ordinry rubberA having no bottom at its heel, of a metal .tom and outwardly-projecting end of the iirst plate and bearing on its outer surface spikes, the said spike-plate being adapted to it upon the bottom ofthe heel and to tightly close the same when in working osition, a spring arranged between the mem ers of the hinge connecting the embedded metal plate and the spike-plate and having the tension to hold the spike-plate out of working position, substantially and for the purpose as specified.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

LOUIS PEROTTI. Witnesses:

PHILIP DAvrD LEFKowITZ. MAUDE IRENE SCHULER. 

